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function in neurotransmitter release

...to the endoplasmic reticulum. From there they are transferred to the Golgi apparatus, where they are packed into secretory vesicles and transported to the terminals. Some peptides are secreted by
neuroendocrine cells of the hypothalamus or pituitary gland. Because they are released into the capillary system of the bloodstream and act at distant sites of the body, these are called...

influences in aggressive behavior in animals

The neuroendocrine mechanisms that generate aggressive responses and modulate the levels of aggression are complex and far from fully understood. They have been best-documented in invertebrates, particularly in lobsters and crayfish, where the neural circuits responsible for the performance of displays during fights have been partially identified. These crustaceans fight readily, and, after a...